Rotary engine



3 Sheets-Sheet 1. SMITH.

(No Model.)

M. BOYNE & A. E.

' ROTARY ENGINE.

PatentedNov. 3, 1885.

N. PETERS. Phulo-Limognphor. Waddnglcm n. c.

(No Model.) 3 Sheets-Sheet 2.

M. BOYNE 8: A. E. SMITH. ROTARY ENGINE.

No. 329,619 Patented Nov. 3, 1885,.

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Z f w m N. PETERS. PhMuLilhognpbnr, Walking! EC- (No Model.) 3Sheets-Sheet 3.

M. BOYNE 81; A. E. SMITH.

ROTARY ENGINE.

No. 329,619. Patented Nov. 3, 1885.

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Emma STATES ATENT @rrrcn.

MICHAEL BOYNE AND ALBERT E. SMITH, OF \VATERTOVZN, \VISCONSIN.

RQTARY ENGINE.

BJPECIFDGATIQN forming part of Letters Patent No. 329,619, datedNovember 3, 1885.

Application filed July 21, 1884.

To (LZZ whom, it may concern:

Be it known that we, MICHAEL BOYNE and ALBERT E. SMITH, of Vatertown, inthe coun ty of Jefferson and State of Wisconsin, have invented certainnew and useful Improvements in Rotary Engines; and we do hereby declarethat the following is a full, clear, and exact description thereof.

Our invention relates to improvements in rotary engines, and will befully described hereinafter.

In the drawings, Figure 1 is a vertical cross section ofour improvedengine. Fig. 2 is a longitudinal vertical section throughthe center ofthe same, and Fig. 3 is an end View of' the engine, showing theconstruction of the packing-boxes.

A indicates the enginecylinder, and A A are the heads of the same, whichare bolted thereon, as usual. B is the shaft, and O is theactuating-vane, which is bolted onto the shaft B in any suitable manner,as shown at b. The top and ends of the vane are fitted withpacking-strips c and c 0'. These strips are set out with springs 0" 0working between their inner sides and the respective parts of the vane,as shown in Fig. 1. The ends of the top strip, 0, are slotted to receivethe ends of the strips 0 0. ac are the steamreceiving ports, and a a arethe exhaustports. The upper half of each of the'cylinder-heads A A isradially grooved on the inner face, as shown at a", Fig. 2, and in thesegrooves are received the ends ofthe diaphragm D. This diaphragm isadapted to slide up and down through a suitable opening made at a in thecylindertop, and is connected, by means of the bolts d d, screwing inthreaded studs (1 (1, formed in the upper side of said diaphragm, to thebar D, and the ends of this bar project out toward the cam-wheels E E,keyed onto the shaft B. Suitably bolted onto each ofsaid ends is thevertical arm (Z and in the lower end of the said arm a stud, (1,projects horizontally out in the groove c,cutin the inner face of thecam-wheels, carrying on its bearing end the antiiriction roller d. Thisgroove is made with suitable raising-points, the purpose of which is tocarry the roller d high enough to bodily lift the diaphragm D out of thecylin- Serial No. 138,390. No model.)

der to allow of the passage of the vane O on its revolution around thecylinder. Another groove, 0, is cut in each of the said wheels E E,slightly inside of the groove 0, and in this groove runs theanti-friction rollerf. This roller is suitably mounted on thebearingsteni f, projecting horizontally out on end of the curved armf'-, bolted onto the outer end of the Wedge-frame F. Extending downwardon each end of this frame are the packingwedges FF, which are receivedin the grooves a a of the cylinder-heads, and slide therein between thediaphragm D and the rear edges of the said grooves, cut on an inclinecorresponding to that of the wedges. The wedges, which are designed topress the diaphragm against the front edges of the grooves a, so as toform a steam tight joint therewith, are made slightly shorter than thegrooves, to allow them sufficient space for action. The grooves c c,cutin the inner faces of the wheels E E for the rollers of the wedge-frame,have their raising-points formed slightly in advance and rear of thecorresponding parts of the grooves c e, and, as the wedges F F have tobe lifted only just enough to free the diaphragm D from the pressurethey exert thereon, these raising-points are made very slight, as shownat e e, the like parts of the grooves c 6 being shown at c c.

G G, the steam-valves, which may be of any suitable form, are shown inthe drawings as moving in the direction of the cylinderaXis, their stem9 passing through the steamchest H and projecting at each end of toosame toward the cam-wheels E E. Their alternate motion is produced bymeans of cam projections 6 0, formed on the inner faces of thecam-wheels, against which run the anti-friction rollers g, mounted onthe ends of the valve-stems g. It is obvious that either one of thevalves G and G may be used, according to the direction which it isdesired to impart to the actuating-vane and the drivingshaft, as inwhatever direction the engine is rotated the action of the diaphragm Dand of its steanrpacking wedges is entirely the same. The packingstrip dis fitted on the under side of the said diaphragm in the same manner asthe top and end strips of the actuatingvane,

the range of its springs d d being limited in any suitable manner, asshown at d d. The driving-shaft B is journaled in the bearingboxes I I,mounted in the upper ends of the stands J of the engine-frame. Each ofthese stands has an open slot in its upper end, and both the verticalandhorizontal inner faces of this slot are centrally grooved to a. certaindepth, as shown by dotted lines at z i z, to receive the correspondingflanged edges of the boxes, (indicated by the dotted lines t" 'l i.) Theset-screws i i i, the inner ends of which abut against the edges of theboxes, serve to hold the said boxes in proper adjustment, according tothe wear of the inner periphery of the cylinder.

The operation of our rotary engine may be readily understood from theabove description and the accompanying drawings. I11 the position shownin Fig. 2 of the latter the actuating-vane O is standing opposite theexhaust port a and the anti-friction rollers d and f have just enteredthe regular portion of their respective cam-grooves e and c, the rollersf being the last to reach said portion, so as to let down the wedges FFin place against the ends of the diaphragm only after this latter hasbeen brought down on its seat through the rollers (1 (i As steam isintroduced into the cylinder through the receiving-port a, just opened,the actuating-vane G is carried around with the shaft B three-fourths ofa revolution, opposite the exhaust-port a Atthis moment the cam-wheels EE will be presenting the raising-points c e of their groove 6 to therollers ffof the packing-wedges. These latter are thereby slightlyraised to free the diaphragm D from the pressure, and immediately afterthe rollers (1%? will engage in the raising parts 6 e" of the grooves ce to lift the diaphragm bodily out of the cylinder, wherein the saiddiaphragm returns as soon as the vane O has passed beyondthe grooves ac.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is

1. In a rotary engine, in combination with a movable diaphragm adaptedto slide up and down through a suitable opening of the cylinder in thegrooved inner faces of the cylinder- V heads, and provided withantifriction rollers working in lifting-grooves of cam-wheels attachedto the driving-shaft. a frame carrying wedges that are adapted to bemoved slightly in advance and in rear of the said diaphragm in thegrooves of the cy1inder-heads, substantially as and for the purpose setforth.

2. In a rotary engine, in combination with a movable diaphragm adapted,by means substantially as described, to be moved in and out of thesteam-cylinder, a frame having wedges adapted to move slightly inadvance and rear of the said movable diaphragm, and having anti-frictionrollers in each of its ends, and with wheels fastened onto thedriving-shaft and having suitable grooves to receive the anti-frictionrollers of the wedge-frame, sub stantially as and for the purpose setforth.

3. In a rotary engine, the combination of the cylinder A, having groovedheads A A, shaft B, provided with the rotating vane (l, the diaphragm D,having arms d anti-friction rollers d dfland packingstri p (P, andcamwheelsE E, having grooves e c, substantially as shown and described,and for the purpose set forth.

4. In a rotary engine, the combination of the cylinder A, having groovedheads A A and opening ed, the diaphragm D, shaft B, and rotating vaneG,provided with packing-strips c and c c, substantially as shown and described, and for the purpose set forth.

In testimony that we claim the foregoing we have hereunto set our hands,at Milwaukee, in the county of Milwaukee and Stateof Visconsin, in thepresence of two witnesses.

MICHAEL BOYNE. ALBERT E. SMITH.

Witne ses:

S. S. STOUT, H. G. UNDERwooD.

